The Texans' biggest veteran addition in the secondary had a scary moment in practice this week. Here's what we know.

Houston Texans safety C.J. Gardner-Johnson's ACL remains intact after he suffered a scary knee injury in Thursday's scrimmage, a person with knowledge of the situation told the Houston Chronicle.

Aaron Wilson of KPRC2 reported that the field went silent, and that players took a knee when CJGJ was injured. According to him, it appeared the 27-year-old suffered a knee injury. This would be a major hit to Houston's secondary, which is already without Jimmie Ward, who is still recovering from a foot injury.